Single-memory line-network interface. Consider a line-network interface in which packets are buffered in memory only on the output side of the fabric. A small on-chip queue (100 packets) is all that...

Single-memory line-network interface. Consider a line-network interface in which packets are buffered in memory only on the output side of the fabric. A small on-chip queue (100 packets) is all that is provided on the input side of the fabric. Suppose that your router must support 128 line cards, each of which handles 4 classes of traffic. Also, assume (unrealistically) that input traffic is uniformly distributed over the output nodes. How can you guarantee that no packets will be dropped from the small input queue? Sketch a solution.